what size/thread screws are needed to attach to the carriages? Also, what size are the holes in the rails so I can acquire appropriate screws?

It's M5 for everything. You will have to use the socket head variety for the track.

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2PCS HGR20-1000mm Linear Rail + 1PCS RM1605-1000mm Ballscrew with BF12/BK12 Kit, DSG16H Nut Housing, Coupling, Slide Blocks Linear Guide Rail Ball Screw Set for DIY CNC Routers Lathes Mills

Product ID: 281290638

📏1000mm precision length

🔩Smooth RM1605 ballscrew

⚙️HRC62 hardened steel

Description

⚙️ Elevate your CNC game with precision that commands attention!

PRECISION PERFECTED - 1000mm HGR20 rails deliver ultra-smooth, high-accuracy linear motion for flawless CNC builds.
VERSATILE POWERHOUSE - Ideal for DIY CNC routers, lathes, mills, and industrial automation—engineer your next-level project with confidence.
ROCK SOLID DURABILITY - Crafted from HRC62 hardened carbon steel with chrome plating for rust resistance and long-lasting strength.
EFFORTLESS INSTALLATION - Pre-drilled steel rails and plug-and-play kits make setup quick—get your machine running faster.
FRICTION FREE PERFORMANCE - RM1605 ballscrew ensures zero stick-slip, minimal heat, and low power draw for efficient, precise movement.

This set includes two 1000mm HGR20 linear guide rails, an RM1605 ballscrew with end machining, and essential mounting hardware. Made from hardened carbon steel with chrome plating, it offers high precision, low friction linear motion ideal for DIY CNC routers, lathes, and mills. Designed for easy installation and durable, maintenance-free operation, it ensures smooth, accurate positioning in demanding industrial and automation applications.

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ASIN	B08Q2YRVM8
Date First Available	December 9, 2020
Item Weight	18.63 pounds
Item model number	1G41703272OEKQM5L
Manufacturer	Creabygirls
Package Dimensions	40 x 4.45 x 4 inches

2PCS HGR20-1000mm Linear Rail + 1PCS RM1605-1000mm Ballscrew with BF12/BK12 Kit, DSG16H Nut Housing, Coupling, Slide Blocks Linear Guide Rail Ball Screw Set for DIY CNC Routers Lathes Mills

Description

Specifications

Common Questions